铁磁共振实验中值得注意的几个问题

波谱学杂志 ›› 2000, Vol. 17 ›› Issue (1): 83-87.

• 研究论文 • 上一篇

铁磁共振实验中值得注意的几个问题

侯碧辉¹, 李志伟¹, 陈裕涛²

1 中国科学技术大学物理系, 合肥 230026;
2 中国工程物理研究院应用电子研究所, 成都527邮政信箱 610003

收稿日期:1999-07-26 出版日期:2000-02-05 发布日期:2018-01-10
作者简介:侯碧辉,女,1946年出生,教授
基金资助:
国家高技术研究发展计划强辐射实验室科学基金(批准号:9704)资助项目

SOME NOTICEABLE PROBLEMS IN FERROMAGNETIC RESONANCE EXPERIMENT

HOU Bihui¹, LI Zhiwei¹, CHEN Yutao²

1 Department of Physics, University of Science & Technology of China, Hefei 230026;
2 Institute of Applied Electronics, Chinese Engineering Physics Academy, Chengdu 610003

Received:1999-07-26 Online:2000-02-05 Published:2018-01-10

摘要/Abstract

摘要： 与顺磁样品相比铁磁样品的磁共振信号不仅是强得多,铁磁样品的许多特点都会在铁磁共振(FMR)谱中反映出来.诸如,起始磁化过程的FMR谱线与有剩余磁化强度Mr的FMR谱是不同的,起始磁化过程中的巴克豪森跳跃也会在FMR谱中反映出来.样品的磁晶各向异性、形状各向异性,铁磁高温顺磁的磁性相变等等都能用FMR方法加以研究.

关键词: 铁磁共振, 起始磁化, 巴克豪森跳跃, 磁各向异性, 磁相变

Abstract: Comparing to a paramagnetic sample, the signal of magnetic resonance of a ferromagnetic sample not only is much stronger, but also reflects many characteristics of ferromagnetic resonance (FMR) spectra. Such as, the FMR spectra are different between virgin magnetization and magnetization with remanence M_r. Barkhausen jumps is characterized by FMR spectrum in virgin magnetization. The FMR can also be used to study anisotropy of magnetocrystal, shape anisotropy, and magnetic phase transition of ferromagnetism-high temperature paramagnetism, etc.

Key words: Ferromagnetic resonance, Virgin magnetization, Barkhausen jumps, Magnetic anisotropy, Magnetic phase transition

侯碧辉, 李志伟, 陈裕涛. 铁磁共振实验中值得注意的几个问题[J]. 波谱学杂志, 2000, 17(1): 83-87.

HOU Bihui, LI Zhiwei, CHEN Yutao. SOME NOTICEABLE PROBLEMS IN FERROMAGNETIC RESONANCE EXPERIMENT[J]. Chinese Journal of Magnetic Resonance, 2000, 17(1): 83-87.

[1]	孙桂芳, 侯碧辉, 阮树仁, 肖效光. CdGd₂(WO₂)₄单晶的顺磁共振谱研究[J]. 波谱学杂志, 2006, 23(3): 373-378.
[2]	侯碧辉, 眭云霞, 易俗, 许勤论, 韩世莹. LaBaMnO薄膜的铁磁共振[J]. 波谱学杂志, 1997, 14(1): 63-68.

铁磁共振实验中值得注意的几个问题

SOME NOTICEABLE PROBLEMS IN FERROMAGNETIC RESONANCE EXPERIMENT

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